Mineral fibrous material and process of manufacture



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PZiZiitQd Sept. 23, 1930 1,776,740

UNITED STATES PATENT OFFICE EDGAR S. ROSS, OI PITTSBURGH, PENNSYLVANIA, ASSIGNOR TO THE PHILIP CAREY.

MANUFACTURING COMPANY, A CORPORATION OF OHIO MINERAL FIBROUS MATERIAL AND PROCESS OF MANUFACTURE No Drawing. Application filed February 24, 1926. Serial No. 90,428.

My invention relates to a mineral fibrous the finished product the greater portion of product and process of manufacture. It is the volume would be the filler or binder-as addressed more especially to a product, that for instance in the manufacture of asbestos is of any desired color throughout and can cement products such as shingles, lumber,

5 be formed to any desired shape, composed of wall board, etc. 55 artificially colored mineral fibers and a In my process I prefer to use a dye for colbinder. oring the fibers which when the fibers are I have found that by artificially coloring mixed with the binder forming a fluid mixasbestos fibers by the process of dyeing them ture, either by using a binder of a fluid charusing direct acid or basic organic dyes and acter, or combining a binder with a suitable 60 then mixing the fibers with a suitable binder liquid to form such fluid mixture, will impart and forming the same into the desired prodto such fiuid mixture a color similar to the net I am able to obtain highly satisfactory color of the fibers so that the final product colored material. Will have throughout the same color. If de- My invention is adapted to the production sired, as for instance in asbestos cement prod- 5 of mineral papers such as asbestos papers or ucts, I desire to form a non-fading product felts, solid products such as shingles, panel- I add to the fluid mixture, after the color has j, boards, tile, etc., plastic or semi-plastic matebeen imparted to the mass, any suitable fixing rials, such as a colored cement, in all of which a 'ent and then mould or form the prod'fiFfto is used asbestos fibers and a binder. ifs desired shape. For fixing the color either '70 In explaining the invention I will describe an agent that will have the desired result with same as applied to a product of asbestos\or without boiling the fluid mixture may be fibers and a binder such as a waterproof glue used. to form a solid product. I take the dry Claims asbestos fibers as commercially sold, of any 1. The process of manufacturing an artifi- 75 grad e'desired, and dye them in a solution of cially colored article composed in part of organic dve. such as Du Ponts aratone, by asbestos fibers which comprises mixing dyed mthe fibers into the dye, while it asbestos fibers with a liquid binder, removing is at a boiling temperature, and thoroughly the surplus liquid from said mixture, and

stir the fibers therein. I then remove the then forming the mixture to the desired 30 fibers from the dye solution and air dry shape, the dye in said fiber being of such same. The dyed fibers are then mixed with character that it will impart to said binder a a water )roof 'lue after which the mixture similar color throughout. of fibers and glue is submitted to compres- 2. The process of manufacturng an artifision to remove the surplus binder, compact cially colored article containing mineral 5 the mass and form it to the desired shape, fibers and a binder which comprises forming after which it is dried. a fluid mixture containing artificially colored \Vhile I have described one form of my mineral fibers and a fluid binder, the fluid in ntion I would not be limited to that form binder and the coloring in said fibers being of 40 or to the materials referred to or process desuch character that the coloring will impart 90 scribed as my broad invention is a product to said binder a similar color throughout, composed of mineral fibers artificially colfixing said color, removing the surplus binder, ored by the process of dyeing which are and forming the mixture to the desired combined with a suitable binder. shape. 1

My invention is primarily addressed to In testimony whereof, I have signed my 05 formaton of a product in which the bulk is name to this specification. of mineral fibers, such as asbestos, but if de- EDGAR S. ROSS. sired the fibers could be combined with other filler materials or could be combined with a binder material of greater bulk so that in 

